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Finding the Fourth Proportional to 12,422.60, 18,636.30 and 6,266.60

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Solution

The fourth proportional to 12,422.60, 18,636.30 and 6,266.60 is: 9,401.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,422.60 : 18,636.30 = 6,266.60 : x
  2. Step 2: Convert to fraction form
    12,422.60/18,636.30 = 6,266.60/x
  3. Step 3: Cross multiply
    12,422.60x = 18,636.30 × 6,266.60
  4. Step 4: Simplify right side
    12,422.60x = 116,786,237.58
  5. Step 5: Solve for x
    x = 116,786,237.58/12,422.60
  6. Step 6: Final answer
    x = 9,401.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.